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Ch End 2

QuestionAnswer
Selective cellular permeability and structural stability are provided by Membrane proteins
Rough endoplasmic reticulum is important in synthesizing and assembling proteins
The fundamental subunit of chromatin composed of ~180 base pairs of DNA wrapped around a histone protein is called nucleolus
Condensation of chromosomes occurs during which phase of mitosis? prophase
Cells that have excited the cell cycle and entered a nonproliferative phase are said to be in: quiescence
The regulatory subunit of the active enzyme complex responsible for regulating passage through the various phases of the cell cycle is cyclin
The point in the cell cycle at which cell proliferation (cycling) no longer depends on the extracellular signales is: R
Programmed cell death (cell suicide) is also known as: apoptosis
Are considered initiators of apoptosis: death cytokines, loss of matrix attatchment, and cell damaging stress
Events in hematopoiesis that are regulated by apoptosis Removal of excess neutrophils following cessation of bacterial challenge. Removal of excess B lymphocytes following immune stimulation.
Created by: BOMLT